public async Task<ActionResult> EditProfile(EditProfileViewModel model)
        {
            if (!ModelState.IsValid)
            {
                return View(model);
            }

            ApplicationUser user = await UserManager.FindByIdAsync(User.Identity.GetUserId());
            user.Email = model.Email;
            user.FirstName = model.FirstName;
            user.LastName = model.LastName;
            user.UserName = model.Email;
            var result = await UserManager.UpdateAsync(user);

            if (!result.Succeeded)
            {
                AddErrors(result);
            }
            return RedirectToAction("Index", "Manage");
        }
 //
 // GET: /Manage/UserEditProfile
 public async Task<ActionResult> EditProfile()
 {
     ApplicationUser user = await UserManager.FindByIdAsync(User.Identity.GetUserId());
     EditProfileViewModel editVM = new EditProfileViewModel
     {
         FirstName = user.FirstName,
         LastName = user.LastName,
         Email = user.Email
     };
     return View(editVM);
 }